Based on this product's specifications, here are some alternatives and similar models
DMX wireless set EUROLITE QuickDMX Sender 1x + Battery Receivers 4x (MPN 20000901)
Summary description:
EUROLITE QuickDMX set includes one wireless DMX sender and four battery-powered DMX receivers (MPN 20000901). Designed to transmit DMX512 control signals without cables, the set is suitable for stage lighting, event installations and temporary setups. The battery receivers enable flexible placement and reduce cable runs, while the sender provides central wireless distribution of DMX data for reliable remote control of fixtures.